{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "219239808",
    "entityType": "User",
    "nonce": "0x0fe4c40ed0885072cdf5a95b395870c6bfbe81103701b10022a677dd7db46a5f",
    "signature": "0x2c5ed43862e704dcb410306cbad7e82375930fbcf8a069572f0c6db332fe38373df7ffe3af1ddfd0b89ef28b8bcbfd133c33ca1cb2629959befe9b117ad3fd0f1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}